Finding the Fourth Proportional to 2,591.69, 3,888.29 and 836.97

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591.69 : 3,888.29 = 836.97 : x
2. Step 2: Convert to fraction form
   2,591.69/3,888.29 = 836.97/x
3. Step 3: Cross multiply
   2,591.69x = 3,888.29 × 836.97
4. Step 4: Simplify right side
   2,591.69x = 3,254,369.59
5. Step 5: Solve for x
   x = 3,254,369.59/2,591.69
6. Step 6: Final answer
   x = 1,255.70